San Francisco Chamber of Commerce members heard from San FranciscoDepartment of Environment Director Melanie Nutter about the environment challenges facing San Francisco Tuesday at the April Public Policy Forum. “The green economy is alive and thriving in San Francisco, and SF Environment is forging the path to a more economically viable, socially just, sustainable city.” Nutter remarked.” The group discussed the city’s commuter benefits program, the RecycleWhere program and other green initiatives for businesses and employers.